For background on how the map was made (and its flaws), see the relevant blog entry.
|Lawton||Quite numerous: Cork etc. Ir. Ó Lachtnáin, lachtna, grey. It stands for various septs in Mayo, Meath, Oriel, Galway. The common English name does not appear to be involved. See Loughnane & Loftus. SGG.|
DEDs where Lawton and a second surname are found together